<template>
    <div>
        <!-- 分类 -->
        <el-form label-width="100px">
            <el-form-item label="SKU名称">
                <el-input placeholder="SKU名称" v-model="SpuParams.spuName"></el-input>
            </el-form-item>
            <el-form-item label="SPU品牌">
                <el-select v-model="SpuParams.tmId">
                    <el-option v-for="(item, index) in AllTradeMark" :key="item.id" :label="item.tmName"
                        :value="item.id"></el-option>
                </el-select>
            </el-form-item>
            <el-form-item label="SPU描述">
                <el-input type="textarea" placeholder="请你输入SPU描述" v-model="SpuParams.description"></el-input>
            </el-form-item>
            <el-form-item label="SPU图片">
                <!-- v-model:fileList->展示默认图片 action:上传图片的接口地址 list-type:文件列表的类型-->
                <el-upload v-model:file-list="imgList" action="/api/admin/product/fileUpload" list-type="picture-card"
                    :on-preview="handlePictureCardPreview" :on-remove="handleRemove" :before-upload="handlerUpload">
                    <el-icon>
                        <Plus />
                    </el-icon>
                </el-upload>
                <el-dialog v-model="dialogVisible">
                    <img w-full :src="dialogImageUrl" alt="Preview Image" style="width:100%;height: 100%;" />
                </el-dialog>
            </el-form-item>
            <!-- 销售 -->
            <el-form-item label="SPU销售属性">
                <el-select v-model="saleAttrIdAndValueName"
                    :placeholder="unSelectSaleAttr ? `还未选择${unSelectSaleAttr.length}个` : '请选择'">
                    <el-option v-for="(item, index) in unSelectSaleAttr" :key="item.id" :label="item.name"
                        :value="`${item.id}:${item.name}`"></el-option>
                </el-select>
                <el-button @click="addSaleAttr" :disabled="saleAttrIdAndValueName ? false : true"
                    style="margin-left:10px" type="primary" size="default" icon="Plus">添加属性</el-button>
                <el-table :data="saleAttr" style="margin:10px 0px" border>
                    <el-table-column label="序号" width="180" type="index"></el-table-column>
                    <el-table-column prop="saleAttrName" label="销售属性名字" width="180"></el-table-column>
                    <el-table-column prop="address" label="销售属性值">
                        <!-- row:即为当前SPU已有的销售属性对象 -->

                        <template #="{ row, $index }">
                            <el-tag style="margin:0px 5px" v-for="(item, index) in row.spuSaleAttrValueList"
                                :key="row.id" class="mx-1" closable>
                                {{ item.saleAttrValueName }}
                            </el-tag>
                            <el-input @blur="toLook(row)" v-if="row.flag == true" v-model="row.saleAttrValue"
                                placeholder="请你输入属性值" size="small" style="width:100px"></el-input>
                            <el-button @click="toEdit(row)" v-else type="primary" size="small" icon="Plus"></el-button>
                        </template>

                    </el-table-column>
                    <el-table-column label="操作">
                        <template #="{ row, $index }">
                            <el-button type="danger" size="small" icon="Delete"
                                @click="saleAttr.splice($index, 1)"></el-button>
                        </template>
                    </el-table-column>
                </el-table>

            </el-form-item>
            <el-form-item>
                <el-button type="primary" size="default" @click="save">保存</el-button>
                <el-button type="primary" size="default" @click="cancel">取消</el-button>
            </el-form-item>
        </el-form>
    </div>
</template>

<script setup lang="ts">
let $emit = defineEmits(['changeScene'])
import type { SpuData } from '@/api/product/spu/type'
import { ref, reactive, computed } from 'vue'
import type { SaleAttrValue, HasSaleAttr, SaleAttr, SpuImg, Trademark, AllTradeMark, SpuHasImg, SaleAttrResponseData, HasSaleAttrResponseData } from '@/api/product/spu/type';
import { reqAllTradeMark, reqSpuImageList, reqSpuHasSaleAttr, reqAllSaleAttr, reqAddOrUpdateSpu } from '@/api/product/spu'
import { ElMessage } from 'element-plus';


//存储已有的SPU对象
let SpuParams = ref<SpuData>({
    category3Id: "",//收集三级分类的ID
    spuName: "",//SPU的名字
    description: "",//SPU的描述
    tmId: '',//品牌的ID
    spuImageList: [],
    spuSaleAttrList: [],
});
//存储已有的SPU这些数据
let AllTradeMark = ref<Trademark[]>([]);
//商品图片
let imgList = ref<SpuImg[]>([]);
//已有的SPU销售属性
let saleAttr = ref<SaleAttr[]>([]);
//全部销售属性
let allSaleAttr = ref<HasSaleAttr[]>([]);
//控制对话框的显示与隐藏
let dialogVisible = ref<boolean>(false);
//存储预览图片地址
let dialogImageUrl = ref<string>('')
//将来收集还未选择的销售属性的ID与属性值的名字
let saleAttrIdAndValueName = ref<string>('')

//子组件书写一个方法
const initHasSpuData = async (spu: SpuData) => {
    //存储已有的SPU对象,将来在模板中展示
    SpuParams.value = spu;
    //spu:即为父组件传递过来的已有的SPU对象[不完整的数据来的]
    //获取全部品牌的数据
    let res: AllTradeMark = await reqAllTradeMark();
    //获取某一个品牌旗下全部售卖商品的图片
    let res1: SpuHasImg = await reqSpuImageList((spu.id as number));
    //获取已有的SPU销售属性的数据
    let res2: SaleAttrResponseData = await reqSpuHasSaleAttr((spu.id as number));
    //获取整个项目全部SPU的销售属性
    let res3: HasSaleAttrResponseData = await reqAllSaleAttr();
    //存储全部品牌的数据
    AllTradeMark.value = res.data;
    //SPU对应商品图片
    imgList.value = res1.data.map(item => {
        return {
            name: item.imgName,
            url: item.imgUrl
        }
    })
    //存储已有的SPU的销售属性
    saleAttr.value = res2.data;
    //存储全部的销售属性
    allSaleAttr.value = res3.data;
}
//点击取消按钮:通知父组件切换场景为1,展示有的SPU的数据
const cancel = () => {
    $emit('changeScene', 0)
}
//照片墙点击预览按钮的时候触发的钩子
const handlePictureCardPreview = (file: any) => {
    dialogImageUrl.value = file.url;
    //对话框弹出来
    dialogVisible.value = true;
}
//照片墙删除文件钩子
const handleRemove = () => {
    console.log(123);
}
//照片钱上传成功之前的钩子约束文件的大小与类型
const handlerUpload = (file: any) => {
    if (file.type == 'image/png' || file.type == 'image/jpeg' || file.type == 'image/gif') {
        if (file.size / 1024 / 1024 < 3) {
            return true;
        } else {
            ElMessage({
                type: 'error',
                message: '上传文件务必小于3M'
            })
            return false;
        }
    } else {
        ElMessage({
            type: 'error',
            message: '上传文件务必PNG|JPG|GIF'
        })
        return false;
    }
}
//计算出当前SPU还未拥有的销售属性
let unSelectSaleAttr = computed(() => {
    //全部销售属性:颜色、版本、尺码
    //已有的销售属性:颜色、版本
    let unSelectArr = allSaleAttr.value.filter(item => {
        return saleAttr.value.every(item1 => {
            return item.name != item1.saleAttrName
        })
    })
    return unSelectArr;
})
//添加销售属性的方法
let addSaleAttr = () => {
    /*
    "baseSaleAttrId": number,
    "saleAttrName": string,
    "spuSaleAttrValueList": SpuSaleAttrValueList
    */
    const [baseSaleAttrId, saleAttrName] = saleAttrIdAndValueName.value.split(':');
    //准备一个新的销售属性对象:将来带给服务器即可
    let newSaleAttr: SaleAttr = {
        baseSaleAttrId,
        saleAttrName,
        spuSaleAttrValueList: []
    }
    //追加到数组当中
    saleAttr.value.push(newSaleAttr);
    //清空收集的数据
    saleAttrIdAndValueName.value = '';
}
//属性值按钮的点击事件
const toEdit = (row: SaleAttr) => {
    //点击按钮的时候,input组件不就不出来->编辑模式
    row.flag = true;
    row.saleAttrValue = ''
}
//表单元素失去焦点的事件回调
const toLook = (row: SaleAttr) => {
    //整理收集的属性的ID与属性值的名字
    const { baseSaleAttrId, saleAttrValue } = row;
    //整理成服务器需要的属性值形式
    let newSaleAttrValue: SaleAttrValue = {
        baseSaleAttrId,
        saleAttrValueName: (saleAttrValue as string)
    }
    //非法情况判断
    if ((saleAttrValue as string).trim() == '') {
        ElMessage({
            type: 'error',
            message: '属性值不能为空的'
        })
        return;
    }
    //判断属性值是否在数组当中存在
    let repeat = row.spuSaleAttrValueList.find(item => {
        return item.saleAttrValueName == saleAttrValue;
    })
    if (repeat) {
        ElMessage({
            type: 'error',
            message: '属性值重复'
        })
        return;
    }
    //追加新的属性值对象
    row.spuSaleAttrValueList.push(newSaleAttrValue);
    //切换为查看模式
    row.flag = false;
}

//保存按钮的回调
const save = async () => {
    //整理参数
    //发请求:添加SPU|更新已有的SPU
    //成功
    //失败
    //1:照片墙的数据
    SpuParams.value.spuImageList = imgList.value.map((item: any) => {
        return {
            imgName: item.name,//图片的名字
            imgUrl: (item.response && item.response.data) || item.url
        }
    })
    //2:整理销售属性的数据
    SpuParams.value.spuSaleAttrList = saleAttr.value;
    let res = await reqAddOrUpdateSpu(SpuParams.value);
    if (res.code == 200) {
        ElMessage({
            type: 'success',
            message: SpuParams.value.id ? '更新成功' : '添加成功'
        })
        //通知父组件切换场景为0
        $emit('changeScene', 0);
    } else {
        ElMessage({
            type: 'success',
            message: SpuParams.value.id ? '更新成功' : '添加成功'
        })
    }
}

//添加一个新的SPU初始化请求方法
const initAddSpu = async (c3Id: number | string) => {
     //清空数据
     Object.assign(SpuParams.value, {
        category3Id: "",//收集三级分类的ID
        spuName: "",//SPU的名字
        description: "",//SPU的描述
        tmId: '',//品牌的ID
        spuImageList: [],
        spuSaleAttrList: [],
    });
    //清空照片
    imgList.value = [];
    //清空销售属性
    saleAttr.value = [];
    saleAttrIdAndValueName.value  = '';
    //存储三级分类的ID
    SpuParams.value.category3Id = c3Id;
    //获取全部品牌的数据
    let res: AllTradeMark = await reqAllTradeMark();
    //获取整个项目全部SPU的销售属性
    let res1: HasSaleAttrResponseData = await reqAllSaleAttr();
    //存储数据
    AllTradeMark.value = res.data;
    allSaleAttr.value = res1.data;
}

defineExpose({ initHasSpuData, initAddSpu })
</script>

<style scoped></style>